Home / 30,947.84-42,707.64-16,800.88

Finding the Fourth Proportional to 30,947.84, 42,707.64 and 16,800.88

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Solution

The fourth proportional to 30,947.84, 42,707.64 and 16,800.88 is: 23,185.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,947.84 : 42,707.64 = 16,800.88 : x
  2. Step 2: Convert to fraction form
    30,947.84/42,707.64 = 16,800.88/x
  3. Step 3: Cross multiply
    30,947.84x = 42,707.64 × 16,800.88
  4. Step 4: Simplify right side
    30,947.84x = 717,525,934.72
  5. Step 5: Solve for x
    x = 717,525,934.72/30,947.84
  6. Step 6: Final answer
    x = 23,185.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.